error: Don't explicitly store server in SMTPAuthenticationError

It's already being stored by SMTPConnectionError, which is called via
super().

Signed-off-by: W. Trevor King <wking@tremily.us>
Add George Saunders to __contributors__

For his 80a8edf (email: Change stray SMTP_SERVER to server,
2013-03-18).

Signed-off-by: W. Trevor King <wking@tremily.us>
CHANGELOG: Update with summaries of recent changes

This documents the following changes:
5fd97a2 Add George Saunders to __contributors__
bd7b7ca error: Don't explicitly store server in SMTPAuthenticationError
3f5df62 feed: Add herror to _SOCKET_ERRORS and remove reason handing
c39625e error: Fix ProcessingError message and logging
a3719f8 feed: Catch parsing errors during html2text
a88738f error: Fix super calls for SMTPAuthenticationError, etc.
80a8edf email: Change stray SMTP_SERVER to server
a66dd58 email: Remove explicit ehlo() call
c9f5681 feed: Streamline rel-via title extraction in
  _process_entry_content()
aa8675d feed: Drop Google Reader rel-via manipulation
a226ef6 error: Fix inheritance typos for HTTPError (ProcessingError ->
  FeedError)

Signed-off-by: W. Trevor King <wking@tremily.us>
README: Bump example snapshot versions from 2.71 to 3.2

Now that we have releases in the 3.x line, we should be pointing users
in that direction.  These version numbers should probably be bumped
with each release :(.

Signed-off-by: W. Trevor King <wking@tremily.us>
feed: Remove <table> elements from HTML mail

These were not semantically correct ;).  Based on a patch by Rui Carmo
[1].

[1]: https://github.com/rcarmo/rss2email/commit/2a015bce9d701035b9af874bd56c46f92382e668

Based-on-patch-by: Rui Carmo <rui.carmo@gmail.com>
Signed-off-by: W. Trevor King <wking@tremily.us>